Compound lining machine



July 5, 1932 W. F. BUTLER 1,865,830.

GOMPOUND LINING MACHINEA 2 Sheets-Sheet 1 lNvgLlIoR f @um m Q l 1 i, WN.xm IWNII m1 m NNUU n JWM M ma ,QN ,i |wlw| l, o l o Nw m n NIWWWWHH MYIU ,mm um wm m \Q\ mw July 5, 1932. W. F BUTLER ,865,830

COMPOUND LINING MACHINE Filed Sept. 26, 1927 2 Sheets-Sheet 2 lNvENToRBY ,A y M Patented July 5, 1932 airs sr'rss PATENT ortica Y WILLAM F.BUTLER, HILLSIDE, NEW JERSEY, ASSIGNOR TO .AMERICAN CAN COM- f' IPANY,GF NEW YORK, N. Y., A CORPORATION OE NEW JERSEY Coll/[POUND LININGMACHINE j spread of a lining compound as it is applied to a can end.

In lining can end flanges with a semiliquid gasket compound, which isthen dried in place, the curled flanges of a can end afford 'i 10 areduced space for the insertion of a lining die, and itis oftendesirable to deposit or spread the compound beyond the actual contactsurface or confines of the lining die. In such a case, it is alsodesirable that the sides of the lining die do not engage the adjacentedges of the flange for depositing or wiping the compound from the sideedges of the die. Furthermore, it is diiiicult to reach the curved edgesof a can end flange by actual contact of the die itself and still toprovide a gasket of proper thickness throughout.

lAn important object of the invention is in the provision of diecompound applying surfaces inclined or otherwise varied to spread anddistribute the compound as desired.

A further important object of this invention is the provision of meansfor accurately applying a gasket compound by relieving the end contactportion of the die which carries and applies the compound to be appliedfrom the material adhering to the side Walls of the die at the Vedges ofthe contact surface, thereby permitting a clean-cut application of thematerial carried by the proper applying surface of the die, and therebyminimizing also opportunity for the die to apply compound from its sidesas contradistinguished from its own operative face to the shoulder ofthe can end orthe curl, as the die passes onto or out of die-applyingposition.

Numerous other objects of the invention will be apparent as it is betterunderstood from the following description7 which,

taken in connection with the accompanying y drawings, discloses apreferred embodiment thereof.

In the drawings:

Figure 1 is a sectional view of a compound lining machine for can endsembodying Ithis invention;

Application led Septembery 26, 1927. Serial No. 222,187.

Fig. 2 is an elevation, with a portion in section, of a lining dieconstructed in accordance with this invention;

F ig. 3 is a plan view of a lining die, as shown by Fig. 2;

Figs. Ll, 5 and 6 are fragmentary sections illustrating the'applicationof a lining compound to a curled flange of a can end by a lining die, asshown in Figs. 2 and 3; and

Figs. 7, 8 and 9 are fragmentary sections illustrating a modified formof die in three positions for applying a lining compound to the inwardlycurled flange of a canend.

The operating mechanism for'this invention, as illustrated in Fig. 1,may be substantially the same as that shown in the Hothersa-ll Patent1,634,500 granted July 5, 1927, the particular improvement of thepresent invention relating to the form and construction of the compoundlining die.

Referring more particularly to the drawings, a table 10 issupportedl bylegs 11 and 12, and has a guideway 18 in the top with a well or tank 14extending downwardly from the table intermediate the ends of theguideway and adapted to contain a quant-ity of semi-liquid gasketcompound 15.

A cover feeding mechanism at the top of the table comprises a feed barA16 having a rack 17 engaged by a pinion 18 oscillated by a rock shaft19. Mounted in slots 2O in the under side of the bar are pivoted feeddogs 21 suitably spaced and adapted to engage can ends 22 placed in theguideway 13, and to feed them in one direction by the reciprocation ofthe feed bar 16.

At the lining station, which is directly over the compound tank 14, eachcan end 22 is supported by means of a number of elec the bottom of thetank 14, and is adapted to be raised and lowered in the tank to carrythe lining compound into engagement with the can ends.

To move the die 25, a link 30 is connect-cd to the lower end of shaft 28and to one arm of a bell crank 31 mounted on a shaft 32 and carrying aroller 33 at its other end for engaging a cam 34 mounted on acontinuously rotating cam shaft 35. Contact of the cam and its roller 33is maintained by means of a spring 36 connected to the bellv crank 31 atone end and to a bracket 37 extending from leg 12 at the other end.

The operation of shafts and 19 is timed so that the die is moved intooperative pesition to line the flange of a can end 22 while it is atrest at the lining station.

In order to prevent the operation of the lining die when there is nocover in position to be lined, a lever 38 is pivoted at the upper end toa support 39 mounted at the bottom of the tank 14 and extending upwardlybetween two of the arms 26, and this lever has a contact arm 40 normallydisposed in the path of a can end 22 and having a notch 41 at its lowerend adapted to engage 'the arm 26 of the die member when there is no canend in place. This lever is pressed in cover engaging position by meansof a spring 42, which engages the under side of the arm 40 and is woundaround the pivotal mounting of the lever in a well-known manner. hen thenotch 41 of this lever engages the arm 26 of the die, the cam followingroller 33 does not follow the contact surface of the cam 34 under theaction of the spring 36, and, therefore, the die 25 is not raised. Thepresence of a can end 22 at the lining station releases the lever fromengagement with the arm 26 and permits the normal operation of the die.

As the present invention relates more particularly to the shape of thecompound applying portion of the die, Figures 4, 5 and 6 illustratethree different positions of a die for applying the compound to a canend 22, having a flange 44 formed with an inwardly curled edge 45, asprovided for a double seaming connection of the can end. The upper endof the die 25 has a top contact surface 46 inclined slightly downwardfrom its inner to its outer edge for carrying an annulus 47 of thelining compound. The outer wall has an under cut part or recess 48extending from a point adjacent the outer edge of the compound carryingsurface 46, so that a film 49 of the compound, which adheres to theouter wall of the die member, is drawn downwardly by gravity away fromthe outer edge of the contact surface To show the difference, the innerwall of the die member is not recessed and a film 50 of the compoundextends to the inner edge of the contact surface 46 Vfrom which it isdrawn away by the weight of the film, as clearly shown in Figures 4 to6.

In Fig. 4 the die is shown as it appears just before the application ofthe compound to the under wall of the flange 44; in Fig. 5 the die isshown in its upward position with the excess compound of the annulus 47projected outwardly by the inclined surface 46 to form a lining 51 whichextends within the curled portion of the fiange beyond or without theconfines embraced by the contact surface itself. lVhen the die iswithdrawn, as shown in Fig. 6, a thin film or annulus 52 of the liningstill adheres to the applying surface 46 of the die, and the lining 51has run slightly and spread in an even film from the surface where thedie member pressed the compound in engagement with the flange 44 andinto the curled portion of the flange.

Figs. 7, 8 and 9 show a die member 53 of modified form in threepositions, corresponding to the position of the die member in Figs. 4, 5and 6. ln this form, however, the compound applying surface 54 at theend or top of the die member is flat, and both the inside and outsidewalls are formed with recesses 55 and 56 cut away from the edges of thecontact surface 54, so that the films 57 and 58 of semi-liquid liningcompound run down sharply from the corresponding edges of ther contactsurface 54. l/Vith this construction, a charge 59 of compound liningcarried by the contact surface 54 will be spread in both directions toform a lining 60 which extends beyond the edges of the die and is spreadby it in a definite film or layer covering the corresponding portion ofthe inside of the flange, as shown by Fig. 9.

If desired, the contact surface at the end of the die member may beinclined downwardly in one direction, as shown in Fig. 4, or in bothdirections from a central point, rather than leaving it flat, as shownin Fig. 7. This inclination assists in distributing the compound in anydesired manner within the flange, and is particularly desirable for aninwardly curled flange as herein shown, because the inwardly curled edge45 reduces the space through which the die member can pass, whereas itis frequently desirable to spread the lining compound throughout agreater portion of the flange than is covered by the contact surface atthe end of the die. In cutting back the vertical faces of the diebeneath its end compound upon the sides quickly recedes, under theaction of gravity, out of position which would enable the compound onthe die to contact with the sides of the pass into the flange throughwhich the die must enter, this pass being defined at one side by the canend shoulder and at the other by the edge of the curl. rlhe amount ofmaterial supplied to the can end is therefore both measured accuratelyand is accurately distributed in accordance with the face of the dieitself. In thus c-utting away the walls at the sides of the compoundapplying surface, not only is the full width of the end of the die madeeffective, but also the lining compound carried at the end of the die isprojected thereby in a more definite, accurately controlled film.

It is thought that this invention and many of its attendant advantageswill beunderstood from the foregoing description, and it will beapparent that many changes may be made in the form, construction andarrangement of the parts without departing from the spirit and scope ofthe inv-ention or sacrificing all of its material advantages, the formhereinbefore described being merely a preferred embodiment thereof.

I claim:

l. In a gasket die lining machine, a holder for a can end having aninwardly curled flange, and means for applying a lining compound to theinterior surface of the curled fiange of a can end, said meanscomprising a die member of a width less than that of the flange, havinga compound carrying end, and having sides reduced from the edge of theend for drawing compound by gravity away from the edges of the die,whereby the compound carried at the end is applied to the interiorsurface of a can end flange definite in amount and spreading on saidsurface sidewise from said die.

2. In a gasket die lining machine, a holder for can ends, and a die forapplying a lining compound upon a can end, said die having a compoundapplying end with sides of the die cut away inwardly to draw liningcompound away from the edges of the applying end by gravity.

3. In a gasket die lining machine, a can end holder and a die forapplying compound to a can end, said die having an end applying surfaceand an under cut side wall to draw the gasket compound away from theedge of the end applying surface.

1l. In a gasket die lining machine, a can end holder and a die forapplying a lining compound to a can end, said die having an end applyingsurface with both sides of the die below said applying surface under cutfrom the edges thereof to make an accurate application of a definiteamount of compound by means of the end applying surface.

5. In a gasket die lining machine, a can end feeding mechanism, meansfor holding a can end in position to be lined, and a die movable toapply a semi-liquid compound to a can end, the die having an uppersurface inclined from the interior outwardly with under cut walls belowsaid upper surface to apply a definite amount of compound with clean cutedges, the inclined surface spreading the compound beyond the applyingsurface of the die.

6. In a gasket die lining machine, a movable die for applying a liningcompound in an annular ring to a can end, the applying surface of thedie being formed with a portion inclined to one side of the die whichspreads a compound beyond the contact surface of the die.

7. In a gasket die lining machine, a holder for a anged can end, andmeans for applying a lining compound to the flanged portion of the canend, said means comprising a movable die having an applying surfacedownwardly inclined to a side of the die for depositing a semi-liquidgasket compound at varying depths on the applying surface.

8. In a gasket die lining machine, a holder for a can end having anannular flange curled inwardly, and means for applying a lining compoundto the curled surface of a flange, said means comprising a movable diehaving a surface downwardly inclined to a side of the die for collectinglining compound thereon and adapted to spread the compound beyond theactual contact surface of the die when it is moved to deposit thecompound in the flange of a can end, the compound spreading beyond theconfines of the die and into the curved surface of a flange.

9. In a gasket die lining machine, a holder for a can end with aninwardly curled flange, and means for applying a lining compound to theinterior surface of a flanged can end, said means comprising a movabledie member of a width less than that of a flange to which it is applied,the die member having a lining compound applying surface which isdownwardly inclined to a side of the'die to spread the compound beyondthe edges of the die surface by its contact with the interior of aflanged can end.

WILLIAM F. BUTLER.

